Mechanical movement.



A. B. KRAEGBR. MECHANICAL MOVEMENT. .AP'PLIOATION FILED APR; 4, 1910.

Patented Aug". 23, 1910.

Un'rrsp sirn rse orsrcn sneer s. or Mencken, scenes-Ks.

%ECHANI.GAL MQVEMENT.

To all whom it may concern:

Be it known that I, ADAM B. Yin menu, oi": the town of Mynard, in the county of Cass, inthe State of Nebraska, have invented cer lain new and useful Improvements in Mechanical Movements, which improvements ere described in the following specification ism; and in particular to such transmission with modification of speed.

It is the object; of the invention to eilfect such transmission from driving shaft which rotates either ate uniform or e veriable speed of, irotution to a driven shaft which rotates either at an independently variable-or uniform speed as may he required; To uccomplishft-his object I incorporalze in such intermediate mechanism a pair of adjustable hinged yokes which are actuated from the driving shaft by ecccu tries, and e ratchet-wheel, which is lined .,upon the driven shaft, and is actuated from said yokes by conncctingrods and pewls. By such intermediate mechanism circular motion at given speed is converted into re ciprocuting motion of controlled au'iplitude, or throw, and suchreciprocating motion is reconvcricd into circulu r motion atu speed which is dependent upon that amplitude,

The host manner in which il'huve conteinpletedepplying thc principles of my inveir tion is illustrated by the said accon'igmnying drawings.

Figural is u side elevation of irzuncwork and the operative parts of e mcchunicel movement which is constructed in accordance with these principles; while Fig. is an incomplete plan of. the same. 1

In these views the numerals Land 2- denote respectively the driving shaft end the driven she-ft of the said mechanical movement, which have their hearings in e iii-um: 3. Shaft 1 curries duplici'e eccentrics 4t {LIX 5,- set side by side at an angle oi ninety derees, relatively to each other; while shaft carries a ratchehwhcel 15. An adjustable $peciiicaslon of Letters Fatent.

lever arm 8, which isfulcrumed to frame 3 by pivot 9, end whichis provided with a spring catch 10, engaging rock 16, supports hypivot 1'? two dependent slotted yokes 6 and 7, side by side, in continual engagement with said eccentrics respectively; While slotted connectiug-rods 11 end 12, )ivoted to saidyokes respectively, and reciprocating Patented Aug. 23, 1910. implication filled s ur mo. Serial us; mes

on shaft, 2, curry respectively the two pairs 1 of spring-scorched pewls, l3 and 13, and 14c and 14c, which'engege said ratchet-wheel. By adj u'stment or' catch 10, relative to rack 16, the lever arm 8 is, in operation, adjusted to any desired higher or lower position; and the dependent slotted yokes 6 and 7 are thereby adjusted to u corresponding position relative to the eccentrics 4- end 5, which Work therein. According to such adjustment, any

desired throw Within the structural capacity of the apparatus, is imparted to the connectin -rods l1 and 12; while the pawls 13, 14, 13 and 14, engaging the rutchet'wheel 15 in the order named, and operating in uninterrupted and overlapping succession in that order, impart to lhzil', wheeL-end thereby to shaft 2, a continuous movement, which is epproxin'uitely uniform through all parts of eachentire revolution, and whose speed, within the some limits oi that cupucity,-is dependent upon the described adjustment of said lever and swinging yokcs, reletivclyfto the contained eccentrics l and 5.

The transmission of power by means of necessary to uctuutei roinu main axle a drill blade or the like at u chengeehlespeed or with varying frequency, according to time,

place and purpose.

I cla1m:--

A drivin shift; 1W0 eccentrics, which are set on said shaft, one inedvence of the other; two yokcs, which swing on a movable pivot, and are engaged "by said eccenhrics re spectively; 111821115 of moving said plvot t0- werd andfrom said driving shaft; a rotary shaft, which is to be driven; a ratchet Wheel thereon; two reciprocating rods, which are pivoted to said pivoted yokes respectivelf;

recipro'cating rods.

Intsfimony whereof I hfereun'to se my name in the presence of two' 'witnesses.

ADAM B. "KRAEGER.

in combination with two pairs of paw which are carried by said reciprocating rods respectively, and are arranged to engage said ratchet wheel in uniform succession at, each Witnesses: stroke and each return stroke of eagh of sand WILLARD EDDY, E S. Room. 

